How much does a 2.00 to 2.99ct J SI2 lab grown radiant diamond cost?

As of September 2026, 2.00 to 2.99ct J SI2 lab grown radiant diamonds typically cost £3,314 GBP to £11,267 GBP, with a median price of £4,208 GBP. There are currently 26 diamonds matching this specification available across retailers.

Where can I find the best price on a J SI2 radiant diamond?

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2.00 to 2.99ct J SI2 Lab Grown Radiant

Quick answer

As of September 2026, there are 26 lab grown radiant diamonds with J colour and SI2 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run £3,314 GBP to £11,267 GBP, with a median of £4,208 GBP. At least 4 retailers stock this exact specification. Half of all listings fall between £1,616 GBP and £4,139 GBP per carat. The same specification in natural form lists at a median of about £3,673 GBP per carat.

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Radiant lab grown stones in the index: 473 USD per carat, -12.5% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

Lowest Price

£3,217 GBP

Highest Price

£15,996 GBP

Average Price

£6,201 GBP

Market Intelligence

Retailers Selling

Price Spread

119.3%

Price Range

Price per carat distribution across retailers

$2,857/ct

10th Percentile

$2,153

Median

$2,857

90th Percentile

$7,147

Score Distribution

26 diamonds scored across 1 quality tiers

Average

26 (100.0%)

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Related Specifications

D IF D VVS1 D VVS2 D VS1 D VS2 D SI1 E IF E VVS1 E VVS2 E VS1 E VS2 E SI1 F IF F VVS1 F VVS2 F VS1 F VS2 F SI1 G IF G VVS1 G VVS2 G VS1 G VS2 G SI1 H IF H VVS1 H VVS2 H VS1 H VS2 H SI1 I IF I VVS1 I VVS2 I VS1 I VS2 I SI1